Grain drill power lift



Dec. 3, 1940.

KH. KRAusE GRAIN DRILL POWER LIFT Filed July 28, 19:59

3 Sheets-Sheet l A 7 TOQ/VY Dec. 3, 1940. K. H. KRAUYsE 2,223,624

GRAIN DRILL POWER LIFT Filed July 28, 1959 5 Sheets-Sheet 2 /Nl/E/Y TO@ /fA/:JL H /mAasf BY Dec. 3, 1940. K. H. KRAUsE GRAIN DRILL POWER LIFT Filed July 28, 1939 3 Sheets-Sheet 3 Patented Dec. 3, 1940 UNITED STATES* 'PATENT OFFICE e aolaims. (o1. .9v-244) f l In devices of the class having va xed power lift movement there is necessarily limited room under the frame for the ground engaging means or furrowopeners whenlifted .especially during shal- 51 lwlplanting'. The openers are necessarily spring heldintotthe ground. For deep planting or when considerable spring pressure is needed to hold the .openers into the ground they will scarcely clear th'eground when lifted;

.The .present invention relates to power lifting and' depth'regulating devices' wherein there is providedia lever'having means associated with thec'power lifting Aclutch whereby the lever adjustmcnts influence the ground engaging means when'in .theirfdown or operating position only.

My inventionv also relates to' a novel clutch mechanism which cooperates with the depth changing mechanism to provide a device which is simple,v reliable, durable land eicient.

To these and other useful ends my invention consists of parts, combinations of parts, or ltheir equivalents, and mode of operation, as hereinafterset 'forth and claimed and shown/.in the accompanying drawings in which: g5 Fig; '1 vis aside elevation of .a grain drill equipped withA my invention, the near wheel anda fraction of the frame being removed so as to more clearly illustrate vmy invention.

Fig. 2 `is a fractional rear view of Vmy invention illustrating 'the clutch mechanism and wheel axle connection to the frame'members Fig. 3 is a side view illustratingthelever, clutch crank Aand link mechanism in position when the groundv working device is lifted.

Fig. 4 is a side View illustrating the lever, clutch crank and links in position when the ground wo'rkingdevice is in operating position.

Fig. `5 is an end view'of the (clutch mechanism taken 'on line 5-5 of Figure 2.'

o Fig. 6 is a transverse sectional view of the clutch mechanism taken on linesxG-L-S of Figure 5;

As thus illustrated`,'the"main 'frame of my device is designated inl its entiretyby reference character A. The seed y`boX is designated in its entirety by reference character B. The ground workingdevice orzfurrow openers are designated in their entirety by reference character C. The power llifting clutch in its entirety is designated by reference character D. The link connections `between the clutch, leverand the ground engaging device ,'are'in their entirety, -designated by referencecharacter E.

InFigure 41 I illustrate .in part, a conventional seeder wherein .the ygrain boXB.is mounted on the rea-rof'frameA, theframe `being supported by 'means of Aground wheels I which are 'mounted on the 'outer end ofistub axles I I (see Figure 2). The outer ends of these stub axles arerotatably mounted 'on'the end frame'me'mber I2 by means of bearing blocks I3. The inner ends of the axles are Vrotatably mounted Von other frame 'mennbfersv I2 through the clutch mechanism as will hereinafter appear. f l

I have, as a matter of convenience, illustrated memberA as'having a forwardly extending centrally positioned extension having ahitch bracket E5 and a vertically'adjustable clevis I6 hingedly secured' thereto Whichfis adapted to be attached to the draw bar of a tractor. Afdepth regulating lever II'is pivotally mounted on the front ofthe mainframe as `will hereinafter appear.

The frameproperv comprises a number of spacedY angley bars l2, the rear ends beingY preferably secured together by means of anangle bar It. The front ends' ofbars I2 are secured together by means of an angle bar I9. Iin'angle'bar 2Il'is positioned `'as illustratedin 'Figure' 1 and secured to members VIZA-ftlius providing a substantial main framefhaving'a forwardly extending hitch portionl as already outline 'i..V y y Lever Il ispivotally mounted on' frame `A vas at 25 and having a sector 26 which is preferably secured to thecenter bar 2l of the forwardly extending'frame portion. It lwill be noted that the outel` ornearportion 28 of the forwardly'extending hitch `portion of the-frame is cut-away as at 29 `so as to more clea-rlyillustrate the lever and its connecting parts.` lSector 26 is shown as being secured -to member 2l.- It may, however, `besecured toanyother portiony of theV frame A.

The ground engaging means inthe present instance are furrow opening discs 130. 'Ihese discs as is the custom in devicesof the kind-are yusually spaced about v8" apart each being provided with a beam 3lr which is mounted on `transversely spaced hinges to member I9 as at 32 so the-ground engagingI means may Ybe raised :and lowered'as willhereinafter appear.

Ground engaging means C `is provided with a seed `directing shield :or boot 33 'which is rigidly secured to member 3l by means of arm 34 yand having an opening in its top asfat 35 forthe reception cfa -iiexibleseed tube36, the seed tube rearwardly, members 30 will be yieldingly held into the ground. The position of arm 4| is controlled by means of lever |1 and the clutch mech'- anism as willhereinafter appear.

I will now describe the connections' betweenjli lever 1, arm 4| and the power lift clutch (see Figures 3 and 4). A downwardly extending arm 5| is operatively connected to'lever. |1 andon the lower end of this arm-I pivotally mount a link 52. This link is shaped as illustrated so as to make the necessary movements possible withoutv interfering with shaft 25'and/ its supports.

At the upper end of link `52 I pivotally mount a link 53 as at 49 the link extending to and being pivotally mounted on crank pin 50. Pin. 50 as will hereinafter appear is adapted tov be vmoved to its positions alternately one of which is shown in Figure 3 vand the other in Figure 4.

I pivotally mount a third link 54 at-its forward end'to link 52 as at'55, the rearward end of which is pivotally secured to lever 4| as at 56. This connection, however, may be made in any one of the three'orii'lces shown in arm 4I for purposes which will hereinafter appear. When lever |1 is in the position illustrated in Figure 3 by solid line and pink 56 is in its forward position as shown, arm 42 will be in its upper `position or in 'the position adapted to hold furrow openers 30 out of the ground.

In Figurev 3 I illustrate lever |1 in its furthest forward position by means ofza dotted line and the other connecting parts Yare also shown by dotted lines when the lever is in this position. Thus it will be seen that when leverV I1 is moved to its forward position, arm 4| is` not materially changed in its position becauseof the action of links 52, 53 and '54.

`A series of spaced orifices 51 are providedin the free end of arm 4| which are positioned so therear end of link 54 may be moved to either of these orifices without changing the lifting position of the ground engaging means when they are in their lifted position as will be clearly Vunderstood by scrutinizing Figure3. However, it will be seen that these ori'ces 51 may be used to vary thev depth position of thefurrow openers relative to the positionof lever I1. y

Referring now to Figure 4 which illustrates the crank pin 50 in its rear position or the position required to move the furrow openers to their operating position. yIt will be seen vthat when depth lever I1 is in the position shown by solid lines, arms 42 will be inthe position shown by solid lines and that when lever |1 is moved to the position shown by dotted line, arms 42 will also be in the position illustrated by dotted lines. Th'ufsthe furrow openers, when in the ground, mayv beraised and lowered by means of lever I1. This lever movement however, will not inuence the furrow openers when in their raised position as clearly illustrated in Figure 3. v

Referring now to Figures 5 and 6. Axle I has secured thereto and a distance from its end, an internal gear 60. The internal teeth in this gear are shaped as illustrated by dotted lines in Figure 5. I rotatably mount a hub 6| on the end of axle by means of an opening 62 which ts freely over the shaft. A larger opening 63 is provided into which is mounted a roller bearing 64. The intention is to carry all of the axle weight on this roller bearing in the following manner:

A bracket 65 is secured to frame member |2.

' This bracket extends forward a distance so as to provide a pivotal support for the front end of a manually operated lever 66 as at 69. Bracket 65 is adapted to rotatably support member 6| in opening 61. I provide a disc or plate 68 which is secure tomember 6| and being large enough to form an end thrust against member 65 so as to position member 6| relative to its support. Member 6| may be'classed ythe intermittently operating part of the clutch and member 60 the constantly rotating part of the clutch. k

Means are provided whereby member k6| :will

be caused to turn one half revolution every timelever 66 is operated as follows:

Member 6| is provided withoppositely extending members 10-10, eachvhaving depressionsf1| formed onjtheir fronts by meansA of guides-12 anden the'rear by raised portions 13. Anarm 14 is pivotally mounted to member 6I'as at .15. This arm carries a roller 1B-through the-medium of a pin 11. The outer end of pin 11 is anchored to member 15 by means of a link 18fas illustrated.

A'spring 19 (see dotted lines in Figure 5)., operates to pull member 14 in the direction indicated by dotted vcurvilinear arrow. Member 14'is provided on opposite ends with projections which are caused to fill the space 1| by action of spring 19 at which time roller 16 is yieldingl-y held into pockets 82 of member 60. Thus when the'clutch operates, member 6| will be carried around `with member 66. Lever 66 is provided'with an upwardly extending projection 83 having secured to its end arrope which extends to the operator of the tractor.

A sleeve 84 is `rotatably mounted on lever 66 by means of bolt 85.' This sleeve ism'ade of a vdiameter which will loosely fit into depression 1|. Members 80 are made long enough so whenfroll'er 84 is caused to approach depression 1|', it will contact one of members 80v and carry it back-to the position illustrated in Figuref thus to disengage roller 16 from pockets 82 and 'hold-'the intermediate part of kthe clutch into position after roller 84 finds lodgement into depression 1| which position is insured by the action of v'a' spring 86. A Y y When the clutch pin 56 is in the position illustrated bydotted lines in Figure 5` or as illustrated in Figure 4, thevfurrow openers will be downlor in operating position and the linkage will bein the position illustrated in this figurer depending upon the position of lever 1.

Every time lever 83 is pulled'far enough to olis-v engage the clutch mechanism; roller 16 will be caused to contact members 82 and member16| will be carried around one half turn and roller 84 will again contact one of members 80 and. cause made without departing from the spirit and scope of the present invention as recited in the appended claims.

Having thus shown and described my invention, I claim: v

1. A ldevice of the class described, comprising a wheeled carry frame, Vthe wheels being mounted on the outer ends of stub axles, a half turn clutch operatively connected to the inner end of one of said axles, ground engaging means mounted for vertical movement on said frame, a depth regulating lever mounted on said frame having operating connections to said ground engaging means and said clutch, said operating connections comprising a depending arm operatively secured to said lever, a relatively short Vlink pivotally mounted at its lower end to the lower end of said arm, the other end of said short link having independent link connections to said clutch and ground engaging means, said three links being positioned and shaped whereby the movement of ment of said lever will not materially change their position. l

2. A device of the class described, comprising a frame having two transversely spaced carrying wheels mounted on the outer ends of stub axles, ground engaging means mounted for vertical movement on said frame, a depth lever mounted on said frame and having operatively secured thereto a depending arm, a vertically extending link hingedly mounted at its lower end to the lower end of said arm and having at its upper end an operating connection to said ground engaging means, a half turn clutch operatively mounted on the inner end of one of said axles and having a link connection to the upper end of said first link to thereby act to raise and lower all or certain of said ground engaging means by swinging said link on its connection to said arm, the shape and position of said arm and links being adapted to permit said lever to change the position of said ground engaging means only when in their ground engaging position.

3. A device as recited in claim 2 including: said clutch comprising an internal gear being secured to its axle a distance from the inner end thereof and an intermittently operating member rotatably mounted on the end of said axle adjacent said gear member Land being rotatably mounted onA said frame to thereby act as a bearing supportfor the end of the axle, a plate secured to the inner end of said intermittently operating member being adapted to act as an end thrust against the frame bearing, a crank secured to said intermittent member and extending through said 4plate to which said last link is rotatably mounted, means mounted on said intermittent member adapted to engage and disengage the teeth of said internal gear,

and manually operated means adapted to control the operation of said engaging means.

4. A device of the class described, comprising a two wheeled carrying frame having ground engaging means mounted thereon for vertical movementa half turn clutch operatively connected to one of said wheels, a depth regulating lever having pivotally secured thereto a relatively short link, separatel link connections between the free end of said rst link and said ground engaging means and said clutch, each said three links being positioned and shaped whereby said clutch may be operated to raise and lower said ground engaging means, and whereby a movement of said lever will act to raise and lower the 'ground engaging means when in their operating position but will not materially change the position of said ground engaging means when in their inoperating position.

5. A device of the class described, comprising a manually operated lever having pivotally mounted thereon a relatively short link, a relatively long link pivotally connected at one end to said short link remote from said rst pivot and having an operating connection at its other end to the device to be raised or lowered, a half turn clutch having a link connection to said first link and adjacent said second link connection, said second link at its remote end being substantially at right angles to the movement of its other end which is brought about by the lever movement when said device to be raised and lowered is in its lifted position and whereby the movementof said lever cooperating with said third link will act to regulate the vertical position of said device when in its lower position.

KARL H. KRAUSE. 

